tests/test-rename

util._matcher: speed up regexp matching.

In 4babaa52badf, Benoit made a change that substantially slows matching
when a big .hgignore file is in play, because it calls into the regexp
matching engine potentially hundreds of times per file to be matched.

I've partly rolled back his change, so that we only call into the matcher
once per file, but preserved the ability to report a meaningful error
message if there's a syntax error in the regexp.

#!/bin/sh

hg init
mkdir d1 d1/d11 d2
echo d1/a > d1/a
echo d1/ba > d1/ba
echo d1/a1 > d1/d11/a1
echo d1/b > d1/b
echo d2/b > d2/b
hg add d1/a d1/b d1/ba d1/d11/a1 d2/b
hg commit -m "1" -d "1000000 0"

echo "# rename a single file"
hg rename d1/d11/a1 d2/c
hg status
hg update -C

echo "# rename --after a single file"
mv d1/d11/a1 d2/c
hg rename --after d1/d11/a1 d2/c
hg status
hg update -C

echo "# move a single file to an existing directory"
hg rename d1/d11/a1 d2
hg status
hg update -C

echo "# move --after a single file to an existing directory"
mv d1/d11/a1 d2
hg rename --after d1/d11/a1 d2
hg status
hg update -C

echo "# rename a file using a relative path"
(cd d1/d11; hg rename ../../d2/b e)
hg status
hg update -C

echo "# rename --after a file using a relative path"
(cd d1/d11; mv ../../d2/b e; hg rename --after ../../d2/b e)
hg status
hg update -C

echo "# rename directory d1 as d3"
hg rename d1/ d3
hg status
hg update -C

echo "# rename --after directory d1 as d3"
mv d1 d3
hg rename --after d1 d3
hg status
hg update -C

echo "# move a directory using a relative path"
(cd d2; mkdir d3; hg rename ../d1/d11 d3)
hg status
hg update -C

echo "# move --after a directory using a relative path"
(cd d2; mkdir d3; mv ../d1/d11 d3; hg rename --after ../d1/d11 d3)
hg status
hg update -C

echo "# move directory d1/d11 to an existing directory d2 (removes empty d1)"
hg rename d1/d11/ d2
hg status
hg update -C

echo "# move directories d1 and d2 to a new directory d3"
mkdir d3
hg rename d1 d2 d3
hg status
hg update -C

echo "# move --after directories d1 and d2 to a new directory d3"
mkdir d3
mv d1 d2 d3
hg rename --after d1 d2 d3
hg status
hg update -C

echo "# move everything under directory d1 to existing directory d2, do not"
echo "# overwrite existing files (d2/b)"
hg rename d1/* d2
hg status
diff d1/b d2/b
hg update -C

echo "# attempt to move potentially more than one file into a non-existent"
echo "# directory"
hg rename 'glob:d1/**' dx

echo "# move every file under d1 to d2/d21 (glob)"
mkdir d2/d21
hg rename 'glob:d1/**' d2/d21
hg status
hg update -C

echo "# move --after some files under d1 to d2/d21 (glob)"
mkdir d2/d21
mv d1/a d1/d11/a1 d2/d21
hg rename --after 'glob:d1/**' d2/d21
hg status
hg update -C

echo "# move every file under d1 starting with an 'a' to d2/d21 (regexp)"
mkdir d2/d21
hg rename 're:d1/([^a][^/]*/)*a.*' d2/d21
hg status
hg update -C

echo "# attempt to overwrite an existing file"
echo "ca" > d1/ca
hg rename d1/ba d1/ca
hg status
hg update -C

echo "# forced overwrite of an existing file"
echo "ca" > d1/ca
hg rename --force d1/ba d1/ca
hg status
hg update -C

echo "# replace a symlink with a file"
ln -s ba d1/ca
hg rename --force d1/ba d1/ca
hg status
hg update -C

echo "# do not copy more than one source file to the same destination file"
mkdir d3
hg rename d1/* d2/* d3
hg status
hg update -C

echo "# move a whole subtree with \"hg rename .\""
mkdir d3
(cd d1; hg rename . ../d3)
hg status
hg update -C

echo "# move a whole subtree with \"hg rename --after .\""
mkdir d3
mv d1/* d3
(cd d1; hg rename --after . ../d3)
hg status
hg update -C

echo "# move the parent tree with \"hg rename ..\""
(cd d1/d11; hg rename .. ../../d3)
hg status
hg update -C

echo "# skip removed files"
hg remove d1/b
hg rename d1 d3
hg status
hg update -C

echo "# transitive rename"
hg rename d1/b d1/bb
hg rename d1/bb d1/bc
hg status
hg update -C

echo "# transitive rename --after"
hg rename d1/b d1/bb
mv d1/bb d1/bc
hg rename --after d1/bb d1/bc
hg status
hg update -C

echo "# idempotent renames (d1/b -> d1/bb followed by d1/bb -> d1/b)"
hg rename d1/b d1/bb
echo "some stuff added to d1/bb" >> d1/bb
hg rename d1/bb d1/b
hg status
hg debugstate | grep copy
hg update -C

echo "# check illegal path components"

hg rename d1/d11/a1 .hg/foo
hg status
hg rename d1/d11/a1 ../foo
hg status

mv d1/d11/a1 .hg/foo
hg rename --after d1/d11/a1 .hg/foo
hg status
hg update -C
rm .hg/foo

hg rename d1/d11/a1 .hg
hg status
hg rename d1/d11/a1 ..
hg status

mv d1/d11/a1 .hg
hg rename --after d1/d11/a1 .hg
hg status
hg update -C
rm .hg/a1

(cd d1/d11; hg rename ../../d2/b ../../.hg/foo)
hg status
(cd d1/d11; hg rename ../../d2/b ../../../foo)
hg status